Hair-clipper



(No ModeL) G. H. COMES. HAIR CLIPPBR.

No. 588,954. Patented Aug.'31,1897.

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UNITED STATE-s PATENT OFFICE.

GEORGE Il; COATES, OF WORCESTER, MASSACHUSETTS.

HAIR-CLIPPER.-

SPECIFICATION forming part of Letters Patent No. 588,954, dated August31, 1897. Application filed December 1, 1893'. Serial No. 492,565. (Nomodel.)

To a/ZZ whom, t may concern-,f

Be it known that I, GEORGE H. COATES, a citizen of the United States,residing at Worcester, in thev county of Worcester and.

v.the head with the clamping-plate and the two cutting-plates removed, aportion of the head being shown in sectional view in order to dlsclosethe interior of the chamber containing the spring by'which the movablehandle is actuated and the means for adjusting the tension of theactuating-spring. Fig. 5 is a central sectional view on line 5 5, Fig.2. Fig. 6 is a sectional View of the clamping-plate shown on line 6 G,Fig. 2; and Fig.

7 is a detached view of the lever for actuat ing the movable plate,showing the actuating-spring, by which the lever is moved Yin onedirection, and the means for varying the tension of theactuating-spring, the latter bef ing shown in sectional view.

Similar letters refer to similar parts in the different gui'es.

My invention relates to the const ructionand application of theactuatinglspringto the movable handle of the clipper; to an improvedmethod of retaining the stationary cutting-plate in position; to meansfor applying a pressure to the outer surfaces of the cutting-plates neartheir cutting edges or at the base of the cutting-teeth, whereby thecutting-teeth are held in contact during the operation of the machine,and also -to the method by which the movable handle is j ournaled in4the head of the machine.

The several features of construction and arrangement of partswhichembody my present invention are fully described in the followingspeciication, and are clearly pointed out in the annexed claims.

' The hair-clipper embodying my invention and represented in theaccompanying draw# ings comprises a head A with a fixed handle A,preferably integral therewith, a iiX'ed or stationary cutting-plate B,attached to the head A, a movable cutting-plate B, capable of a shortreciprocating motion as actuated by the movable handle C, which isjournaled within the head A, and provided with an actuating-lever G',extending over the movable cutting-plate and having adownwardly-projecting prong C2, entering a mortise in the movablecutting-plate in the usual manner in machines of this class.

The stationary cutting-plate B is held from longitudinal movement by theshort studs d a', projecting from the surfaces a a and entering holesnear the rearedge of the stationary cutting-plate B.

The forward or toothed edge of the stationary cutting-plate bearsagainst the lower side of the movable cutting-plate B', while the rearedge of the stationary cutting-plate overlaps a boss G2, formed upon theunder side of the movable handle, so that the rear edge of thestationary cutting-plate is only supported at its center in orderYtosecure an equal pressure along the entire length of its cuttingedgewithout requiring an accurate alinement of the'surface supportingthe rear edge, as would be the case if the rear supporting-surfaceextended entirely across the stationary plate.

The movable cutting-plate B is placed upon the upper surface of thestationary cuttingplate and between the stationary cuttingplate and alip D, formed upon the head A and entering a groove D upon the upperside of the movable cutting-plate- YThe stationary cutting-plate is heldin position by a clamping-plate E, which is pref erably formed fromsheet metal having its sides and rear edge turned .up and having its-front edge E2 bearing against theiunder side IOO E is provided with anelongated hole E to receive a clamping-bolt F, which passes up throughthe movable handle C and head A and receives upon its upper end a nut F,bearing upon the upper lsurface of the head, whereby the clamping-plateE may be drawn toward the head A, causing a pressure to be applied atthe front edge IC2 of the clamping-plate against the lower or stationarycutting-plate B, nearly opposite the lip D, causing the twocutting-plates B and B to be pinched between the edge of the lip D andthe front edge E201. the clamping-plate E, therebyT applying thepressure to the cutting-plates immediately behind the base of thecutting-teeth to hold the opposing surfaces of the cutting-plates inclose contact and prevent the cut hair from working between thecutting-plates.

The head A, which is formed in the shape of an arched or dome-shapedshell,is provided with a central interior tubular boss G to receive andform a bearing for the boss G', formed upon the upper side of themovable handle. Upon the under side of the movable handle is a shortboss Gextending downward into contact with the rear edge b of thestationary cutting-plate B, serving as a fulcrnm for the cutting-plaie'B as pressure is applied thereto by the clamping-plate E, as alreadydescribed.

, The movable handle C is jonrnaled within the head A by means of theboss Gr', projecting from the upper side of the handle and turningwithin the hollow boss G, depending from the head A.

The movable handle C is provided with an arm II, projecting from oneside of the handle and preferably bifureated at the end to receive ascrew-threaded bolt I-I, pivotally connected to the arm II and carryinga nut Il?, to which is attached one or more coils oi' the inner end of aclosely-wound spiral spring I.

The outer end of the spring I is attached by one or more of its coils toa disk which is provided with a flange J at its edge and a diametriealslot J 2,adapted to receive a screwdriver in order to rotate the diskand its connected spring and nut.

The head A is extended upon the rear side and directly beneath the fixedhandle A/ to form a tubular shell or case K, inclosing a chamber K. toreceive the spring I.

The flange J bears against the end of the shell K in order to hold thedisk J from longitudinal movement against the spring I, which in theoperation of the machine tends to pull the disk J within the chamber K'when the handles of the clipper are brought toward each other. The coilsof the spiral spring I are wound close together or in contact with eachother, and as the opposite ends of the spring I are attached to the nutH2 and the disk J the movement of the movable handle C in the directionot the arrow l, Fig. 4, will impartan angular movement to the arm II,carrying the nut II2 in the direction of the arrow 2, Fig. 4, expandingthe coils of the spring and causing the motion of the movable handlewhen released to be reversed by the tension of the spring. y

If it is desired to increase the tension of the spring, the disk J isrotated by means of a screw-driver applied to the slot J2, therebyrotating the spring I and the attached nut Il2 and expanding the coilsoi' the spring I by screwing the nut upon the bolt II'.

It has been common to reverse the motion of the movable handle of ahair-clipping machine by means ot' a springhaving its tension applied tothe movable handle in various ways. For example, a fiat blade-spring hassometimes been placed between the movable and fixed handles of themachine, a torsional spring has been applied to the movable handle, andspiral push-springs have been placed between the fixed and movablehandles.

I am also aware that a spiral push-spring has been employed to reversethe motion of the movable handle with the springheld within the head ofthe clipper and acting against an arm, projection, or shoulder formedupon the movable handle, but the spiral pushspring must of necessity bewound with its coils open or separated, and when such a spring isapplied tothe movable handle within the head of the clipper it requiresa longer spring and correspondingly larger chamber to contain it than Ideem it advisable to use; and my present invention therefore, so far asit relates to the handle-actuating spring, has for one of its objects toallow a closely-wenn d spiral pull-spring to be used in place of anopenly-wound or spiral push-spring. This form of spring, in addition tobeing more compact, also permits a greater variation in its tension forthe reason that the amount of variation possible in a push-spring islimited by the space between the coils. The application of aclosely-wound or pull spring to an arm II, as described, also allows thespringchamber K', inelosed within the shell K, to be located at the rearof the head instead of at one side and directly beneath the ixed handleA, so as to be hidden from view from above, making the clipper moresightly in appearance. rlhe variation in the tension oi the spring isaccomplished by the movement of the nut IP along the screw-threaded boltII', requiring no change in the position of the disk J, which closes theopen end of the shell K.

The clamping-plate E, I prefer to stamp out of sheet-steel, making anelastic plate which is capable of yielding slightly to t-hc clampingboltF and thereby imparting-a slightly-yielding pressure to thecutting-plates B and B.

XVhat I claim as my invention, and desire to secure by Letters Patent,is-

l. A l1air-clipper,havin ga movable cuttingplate, a stationarycutting-plate held by the framework of the clipper, a movable handleoperatively connected with said movable cutting-plate, an arm projectingfrom said movable handle, a screw-threaded bolt pivotally connected withsaid arm', a nut carried on IOO IIO

IZO

said bolt, aspiral spring with one end attached to said nut, a rotatingdisk attached to the opposite end of said spring, said disk being heldfrom longitudinalmovem ent, substantially7 as described.

' 2. A hair-clipper having a head A provided with a lip D bearing uponthe movable cutting-plate, a movable cutting-plate, a stationarycutting-plate, a clamping-plate Withits edge bearing against saidstationary cuttingplate opposite said movable cutting-plate and in theplane of said lip and means for applying pressure to saidclamping-plate, substantially as described.

3. A hair-clipper having a head, stationary and movable cutting-plates,a clamping-plate with its forward edge arranged to bear against saidstationary cutting-plate and with its rear edge resting against saidhead and means for applying pressure to said clamping-plate,substantially as described.

4. A hair-clipper having a head, movable and stationary cutting-plates,a clampingplate with its forward edge bearing against said station arycutting-plate and with its rear edge bearing against said head, and aclamping-bolt and nut by which said clampingplate is drawn toward thehead, and pressure applied to said stationary cutting-plate inthe planeof the forward edge of said clampingpla'te, substantially as described.

5. The hair-clipper having a head, a movable cutting-plate, astationarycutting-plate, with its forward edge bearing against said .movablecutting-plate and with its rea-r edge supported at its central sectiononly, in order to secure an equal pressure valong the entire length ofits forward edge, and means for applying pressure to said stationarycuttingplate, substantially as described.

6. A hair-clipper having a head, a tubular boss depending from saidhead, a movable handle provided with a boss j ourn aled in said tubularboss, and havinga boss G2 projecting from the under side of said movablehandle, a stationary cutting-plate having its rear edge bearing at itscentral section on said boss G2, a movable cutting-plate held betweensaid stationary cutting-plate and said head and means for applyingpressure to said stationary cutting-plate, substantially as described.

7. A hair-clipper vhaving stationary and movable cutting-plates and aclamping-plate E having its'forward edge bearing against the centralsection of said stationary cuttingplate and having its rear edge bearingagainst said head and havingits side edges upturned to inclose the endsof said stationary cuttingplate, substantially as described.

Dated this 27th day of November, 1893.

GEORGE H. COATES.

Witnesses:

RU'FUs B. FOWLER, EMMA KEsTER.

